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Skenea proxima : ウィキペディア英語版 | Skenea proxima
''Skenea proxima'' is a species of sea snail, a marine gastropod mollusk in the family Skeneidae.〔Rosenberg, G. (2012). ''Skenea proxima'' (Tryon, 1888). Accessed through: World Register of Marine Species at http://www.marinespecies.org/aphia.php?p=taxdetails&id=532304 on 2012-09-01〕 The name ''Cyclostrema proxima'' was introduced by G.W. Tryon as a replacement name for ''Cyclostrema affine'' Verrill, 1884 (now recognized as a synonym of ''Skenea basistriata'' (Jeffreys, 1877)), while he thought it was closely related to ''Cyclostrema basistriata'' Brugnone. Anders Warén thought it would probably prove a synonym of ''Skenea diaphana''.〔Warén A., 1991: New and little known mollusca from Iceland and Scandinavia; Sarsia 76: 53-124〕 W.H. Dall thought it a synonym of ''Skenea trochoides''. ==Description== The size of the shell attains 2.2 mm. The shell is narrowly umbilicated, faintly striate, with a few indistinct spiral lines below the suture, and numerous well defined ones on the base. Around the umbilicus the inferior striae become stronger. The surface of the shell is smooth and greyish white. The suture is impressed. The whorls are very convex and rapidly increasing. The thin periphery is round and slightly in contact.〔(G.W. Tryon (1888), Manual of Conchology X; Academy of Natural Sciences, Philadelphia ) (described as ''Cyclostrema proxima'')〕
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